of lansdale



Feb. 19, 1929.

A. c. MOTT, JR., ET AL COMBUSTION RING FOR FURNACES Filed March 10,

Patented Feb. 19, 19 29.

UNITED STATES PATENT OFFICE.

ABRAM O. MOTT, JR., OF LANSDALE, AND CHARLES H. WHEAWILL, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNORS TO ABRAM COX STOVE COMPANY, OF LANSDALE, PENNSYLVANIA, A CORPORATION OF PENNSYLVANIA.

comsusrron RING FOR FURNACES.

Application filed March 10, 1926. Serial No. 93,701.

The object of our invention is to provide a combustion ring for a furnace, in which the fire-brick or hollow cast-iron sections can be v readily placed in position or removed for repairs without dismantling the furnace struo ture.

1 Further objects and advantages of our in vention will be apparent from the accompanying. drawings, in which Fig. 1 is a plan View, partly in section, on, the line 11, F ig.,2, of a household boiler furnace, and illustrating our invention;

Fig. 2 is a vertical sectional view of the combustion ring on the line 2-2, Fig. 1;

Fig. 3 is a sectional View of the ring on the line 3'8,,Fig. 1; s

Fig. 4 is a perspective view of one of the fire-bricks lining the combustion ring;

Fig. 5 is a detached perspective view of the half fire-brick which forms the key for hold.- ing theother fire-brick in position; i r

Fig. 6 is a perspective View of a water-back section which can besubstituted for one of the fire-brick sections at the back of the combustion ring; and I Fig. 7 is a view of a portion of the back of the ring, showing the water-back section located in position.

1 is the base section of the boiler structure? containing the ash-pit. 2 is the combustion ring, and 3 is the upper section. of the combustion chambcrof the boiler or other, heating apparatus. As the invention relates sole ly to the combustion ring, we have shown the other characters of the structure inoutline. The combustion ring 2 in the present instance is frusto-conical in shape, and has a base flange 14 which rests upon the base struc-: ture 1 and is secured thereto in the ordinary O manner. At the upper end of the ring is an internal flange 4, while on the bottom section is a flangeb having spaced teeth which form part of the grate section of the structure.

6 are fire-brick sections, shaped as-shown iii-Figs. 1 and 4, and each brick is of a greaterwidth at the base than at the top and is a seg ment of a complete circle. Thebrick 7 is the key brick, thebricks 6, whenarranged inthe 7 ring, beingheld firmly in position by the key brick 7. When, however, the key brick is removed, the remaining brick sections can be re-- moved through the fire-pot and replaced without dismantlingany other part of the furnace structure.

The key brick 7 is held imposition by the frame 8, the latter havinga clean-out opening therein. The opening in the'frame 8 is closed by a door 9 hinged in the ordinary manner. The portion 10 of the frame 8 extends under the half firebrick 7, and retains it in its raised position, locking all the other fire-bricks, but on removing theframe 8, the brick 7 can be lowered and then removed, as the space is wider at the bottom than the width'of the half brick 7. When this half-brick is removed, all of the otherfull bricks can be readily detached and removed.

If it is desired to locate a water-back in the pipes extend through notches 14 in theback of the section 2v as clearly shown in "Fig. 7

are covered by a plate 15.

In some instances, iron blocks may beused mstead ofthe fire-brick shown, without de-' combustion ring, a "water-back of the type shown 1n Fig. 6 can replace the rearfire-brick 'When the water-back is not used, the notches p parting from the essential. features of the in- Vention, these blocks being made in substantially the same shape as the fire-brick.

Weclaim Thecombination in a furnace, of a frustoconical combustion ring; an opening in the lowerportion of the ring; a detachable frame located in the opening; and a series of tapered bricks mounted in the ring, one of said bricks being a shortkey brick, said short key brick being "located above the ,frame, holding the othertbricks in position and being removable through the space occupiedby the framewhen said frame isremoved, said-removable short I key brick releasing the other bricks.

AB RAM C. JR. CHARLES H. WHEA-VVILL. 

